These are old 12 gauge brass shotgun shell casings from Italy

These are old 12 gauge brass shotgun shell casings from Italy.

Fiocchi 12 ga 2 3/4 hulls - Green Bilozir Fine Guns & Reloading Supplies

Vintage 12 Gauge Empty Brass Case Lot #4396 - Old Caliber Reloading

SHR123 -- Remington UMC 12 Gauge Brass Cases

Magtech Shotshell Hulls 12 Ga 2-1/2 Brass Case of 250 (10 Boxes of 25)

How do double barrel shotguns stop the shells from falling through the barrels? - Quora

Genuine 40mm GMG Casing Shot Glass With Link

Winchester Shotshell Headstamps

Shotgun shell - Wikipedia

This week project: recreating M19 brass shotgun shells : r/milsurp

30-06 Brass Bullet Casings, Empty Fired Rifle Shells, Brass Cartridges on eBid United Kingdom

How do double barrel shotguns stop the shells from falling through the barrels? - Quora